Litter mixing significantly affects decomposition in the Hulun Buir meadow steppe of Inner Mongolia, China
Zhang, CH; Li, SG; Zhang, LM; Xin, XP; Liu, XR
2014
Source PublicationJOURNAL OF PLANT ECOLOGY
ISSN1752-9921
Volume7Issue:1Pages:59-67
AbstractAims We explored the decomposition rates of single- and mixed-species litter, the litter-mixing effect and the effect of component litters in a mixture on decomposition. Methods In a litter bag experiment, shoot litters from two dominant grasses (Leymus chinensis and Stipa baicalensis) and one legume (Melissitus ruthenica) were decomposed separately and as a mixture from May 2010 to September 2011 in the Hulun Buir meadow steppe of Inner Mongolia, China. We separated the litter mixture into its individual component litters (i.e. the different single-species litters) and analyzed the changes in litter mass remaining and litter nitrogen (N) remaining during single-and mixed-species litter decomposition. Important Findings (i) Litter mixing had significant positive effects on litter decomposition. The litter-mixing effect was strongest for the mixture of S. baicalensis and L. chinensis litters, followed by the mixture of S. baicalensis and M. ruthenica litters. (ii) Single-species component litters decomposed faster in the mixtures than separately (positive effect), but these effects were not significant for legume species M. ruthenica litter. Relative to single-species litter decomposition, the decomposition rates of the two grass (S. baicalensis and L. chinensis) litters significantly increased when they were mixed with each other or with M. ruthenica litter. (iii) For each species litter type, the percentage of litter N remaining during decomposition (NR) differed between the single-species litter and mixed litter treatments. The NR of S. baicalensis litter was higher when it was decomposed in the mixture than in isolation. However, the NR of L. chinensis litter was lowest in its mixture with M. ruthenica among the treatments. Regardless of its decomposition in the mixture or in isolation, the NR of M. ruthenica litter varied little among treatments. There was a significant positive relationship between the NR and percentage of initial litter mass remaining in both the single litter and mixed litter treatments. These results suggest that N transfer may happen among component litters in mixture and further affect the decomposition.
SubtypeJournal
Keywordnon-additive effect interaction strength single litter mixed litter nutrient concentration
Subject AreaPlant Sciences ; Environmental Sciences & Ecology
WOS Subject ExtendedPlant Sciences ; Ecology
WOS KeywordLEAF-LITTER ; FOREST ECOSYSTEM ; DIVERSITY ; CHEMISTRY ; GRASSLAND ; MIXTURES ; BIODIVERSITY ; COMMUNITIES ; STREAM ; RATES
Indexed BySCI
Language英语
WOS IDWOS:000334928200006
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44580
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Zhang, CH,Li, SG,Zhang, LM,et al. Litter mixing significantly affects decomposition in the Hulun Buir meadow steppe of Inner Mongolia, China[J]. JOURNAL OF PLANT ECOLOGY,2014,7(1):59-67.
APA Zhang, CH,Li, SG,Zhang, LM,Xin, XP,&Liu, XR.(2014).Litter mixing significantly affects decomposition in the Hulun Buir meadow steppe of Inner Mongolia, China.JOURNAL OF PLANT ECOLOGY,7(1),59-67.
MLA Zhang, CH,et al."Litter mixing significantly affects decomposition in the Hulun Buir meadow steppe of Inner Mongolia, China".JOURNAL OF PLANT ECOLOGY 7.1(2014):59-67.
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